| 摘要 |
<p>PURPOSE:To effectively detect the entrance of a self-traveling vehicle by connecting a separating power supply rail disposed in a self-traveling vehicle detecting zone to front and rear power supply rails through the primary coils of current transformers, and outputting a self-traveling vehicle detection signal by the difference of voltages induced in the secondary coils of both the transformers. CONSTITUTION:One power supply rail 6 is separated at a part 6b disposed at its self-traveling vehicle detecting zone Z from front and rear power supply rails 6a and 6c. The part 6b is connected to the front and rear rails 6a, 6c through the primary coils 10a, 10b of current transformers CT1, CT2. When a self-traveling vehicle 1 enters the zone Z, a difference is generated at the voltages induced in the coils 11a, 11b of the transformers CT1, CT2, thereby exciting a detecting relay CR.</p> |
